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I truly need help!! On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below.

I truly need help!!

On the midnight shift, the number of patients with head trauma in an emergency room has the probability distribution shown below.

x 0 1 2 3 4 5 Total

P(x) .09 .38 .28 .16 .06 .03 1.00

(a)Calculate the mean and standard deviation.(Round your mean value to 2 decimal places and standard deviation to 3 decimal places.)

MeanStandard deviation

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